license_expression_parsing_validation_and_normalization.py

1from license_expression import Licensing
2
3# Define a list of known license symbols
4licensing = Licensing()
5license_expression = "GPL-2.0-or-later WITH Classpath-exception-2.0 OR MIT"
6
7# Parse the expression into a Licensing objects tree
8parsed_expression = licensing.parse(license_expression)
9
10# Access information about the parsed expression
11print(f"Expression: {parsed_expression}")
12print(f"Simplified: {parsed_expression.simplify()}")
13
14# You can also extract symbols (license keys) from the expression
15symbols = parsed_expression.objects
16print(f"License keys: {symbols}")
17
18# Validate if an expression is valid syntax
19validation = licensing.validate(license_expression)
20print(f"Is valid: {validation.errors == []}")